651280896 has 240 divisors, whose sum is σ = 2189972928. Its totient is φ = 182476800.

The previous prime is 651280873. The next prime is 651280909. The reversal of 651280896 is 698082156.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1967451 + ... + 1967781.

Almost surely, 2^651280896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651280896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094986464).

651280896 is an abundant number, since it is smaller than the sum of its proper divisors (1538692032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651280896 is a wasteful number, since it uses less digits than its factorization.

651280896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 651280896 is about 25520.2056418047. The cubic root of 651280896 is about 866.8077382456.

The spelling of 651280896 in words is "six hundred fifty-one million, two hundred eighty thousand, eight hundred ninety-six".